The Schilke B Series with Tuning Bell allows the tuning slide to be left all the way in or moved only a little to keep the bore relatively free of gaps that may cause a disturbance in the nodel pattern of the sound wave. The Schilke B Series Bb trumpets are available in a variety of bell and bore combinations and feature tight valve tolerances for superior performance to meet the needs of the professional player. Choose from the B Series models B1L, B2L, B3L, B4L, B5L, B6L and B7L.